Metallic calking for boats.



No. 783,684. PATENTED FEB. 28, 1905.

- H. E. DANTZEBEGHER.

METALLIG UALKING FOR BOATS.

APPLICATION FILED AUG. 11.1903. RENEWED we. 29,1904.

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SPECIFICATION forming part of Letters Patent No. '7833384, dated February 28, 1905.

A lication fil d August 11, 1908. Renewed August 29, 190 Serial No. 222,606.

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Be it known that I, H ow n E. Darrrznn noini'nn, a citizen of the United States, residing at (1 ermantown, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Metallic Ualking for Boats, of which the following a specification.

My invention has relation to a metallic calking for the seams of boats; and in such connection it relates to the construction and arrangement oi such a calking.

Heretofore in stopping the seams of beats the usual calking was of cotton or oakum tamped into the seams by expert workmen. Such calking not only requires much labor and time to insert in the seams, but after being tamped therein liable to be displaced by,

the movement of the planks when the parts calked warp under heat and cold or shrink and swell when the boat is placed in and out of the water. Some attempts to replace the cotton or oakum-calking by metallic strips have been made with more or less success. Where such strips were used For calking the bottom of the boat, parts ol the strip were in contact with the water in the interior or on the exterior of the boat-bottom and quickly corroded and disintegrated. Again when so used the strips were unable to adapt themselves to the warping, shrinking, and swelling oi the planks-and hence were easily displaced from the seams even when the strip was bolted or riveted to the planks.

The object of my present invention is to providea calking-strip of metal readily adapted to be inserted between adjacent planks of the boat and when so inserted to be entirely surrounded by said planks, said strip being so formed as to yield with the planks when said planks are distorted without opening the seam between the planks.

The nature and scope of my present invention will be more fully understood from the following description, taken in concction with the accompanying drawings, forming part hereof, in which Figure 1 is a transverse section 01. a boat having the metallic calking-strips embodying main features of my invention inserted in its seams. Fig. 2 is an enlarged transverse sectional view of several adjacent planks of the boat with the calking-strips stopping the seamsbetween said planks, and Fig. 3 is an enlarged perspective view of the metallic calking-strip.

Referring to the drawings, a (1/ represent the frames of a boat to the base of which the planks 1/, forming the bottom of the boat, are secured. The contiguous sides of adjacent planks Z) are vertically cut out, as at 7/, and then horizontally cut into, as at I), to form a substantially L-shape slot intermediate oi the inner and outer faces of each plank b. When two planks 7) are arranged side by side, as illustrated in Figs. 1 and 2, the L-shape slots of contiguous sides form a substantially T- shape slot extending longitudinally in the bottom of the boat. The calking-strip (Z com prises a strip oi springy or resilient metal bent intermediate of its ends, as at (Z', to form two wings IZ (Z diverging slightly from the point (1, and each wing (Zaterminates in a flange (1, the 'l'langes (i extending in opposite directions to form a strip which in cross-section is substantiallyv shape. In calking the boat the wings (1 of the strip are inserted in the side grooves 7/ and the flanges 11 are inserted in the horizontal grooves b, and when so inserted the strip el'iectually calks the seam 7)" between adjacent planks I), and is completely surrounded by the planking as clearly illustrated in Fig. 2. Should the bottom of the boat contract or shrink and the seams tend to open at the base of the planks, then the wings d of the strip bend outward away from each other upon the pointrl,as indicated atthe righthand scam in Fig. 2, and will still efl'ectually calk the seam. Should the bottom of the boat expand in an opposite direction, the only effect of the movement of adjacent planks Z; will be to clamp the wings (Z more tightly together, as illustrated at the left-hand seam in Fig. 2, and the calking or stoppage of the seam will not be impaired.

l-[aving thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is-

A. means for calking seams of boats, comprising ametallic strip of substantially V signature in the presence of tWo subscribing Witnesses.

HOWE E. DAN TZEBEOHER.

Witnesses:

J. WALTER DOUGLASS, THOMAS M. SMITH. 

